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<div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.Layer.Vector"></a>OpenLayers.<wbr>Layer.<wbr>Vector</h1><div class=CBody><p>Instances of OpenLayers.Layer.Vector are used to render vector data from a variety of sources.&nbsp; Create a new vector layer with the <a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" class=LConstructor id=link32 onMouseOver="ShowTip(event, 'tt31', 'link32')" onMouseOut="HideTip('tt31')">OpenLayers.Layer.Vector</a> constructor.</p><h4 class=CHeading>Inherits from</h4><ul><li><a href="../Layer-js.html#OpenLayers.Layer" class=LClass >OpenLayers.Layer</a></li></ul><!--START_ND_SUMMARY--><div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable><tr class="SMain"><td class=SEntry><a href="#OpenLayers.Layer.Vector" >OpenLayers.<wbr>Layer.<wbr>Vector</a></td><td class=SDescription>Instances of OpenLayers.Layer.Vector are used to render vector data from a variety of sources. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.events" >events</a></td><td class=SDescription>{<a href="../Events-js.html#OpenLayers.Events" class=LClass >OpenLayers.Events</a>}</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.isBaseLayer" >isBaseLayer</a></td><td class=SDescription>{Boolean} The layer is a base layer. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.isFixed" >isFixed</a></td><td class=SDescription>{Boolean} Whether the layer remains in one place while dragging the map. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.features" >features</a></td><td class=SDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.filter" >filter</a></td><td class=SDescription>{<a href="../Filter-js.html#OpenLayers.Filter" class=LClass id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">OpenLayers.Filter</a>} The filter set in this layer, a strategy launching read requests can combined this filter with its own filter.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.selectedFeatures" >selectedFeatures</a></td><td class=SDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link3 onMouseOver="ShowTip(event, 'tt1', 'link3')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.unrenderedFeatures" >unrenderedFeatures</a></td><td class=SDescription>{Object} hash of features, keyed by feature.id, that the renderer failed to draw</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.reportError" >reportError</a></td><td class=SDescription>{Boolean} report friendly error message when loading of renderer fails.</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.style" >style</a></td><td class=SDescription>{Object} Default style for the layer</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.styleMap" >styleMap</a></td><td class=SDescription>{<a href="../StyleMap-js.html#OpenLayers.StyleMap" class=LClass >OpenLayers.StyleMap</a>}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.strategies" >strategies</a></td><td class=SDescription>{Array(<a href="../Strategy-js.html#OpenLayers.Strategy" class=LClass id=link4 onMouseOver="ShowTip(event, 'tt3', 'link4')" onMouseOut="HideTip('tt3')">OpenLayers.Strategy</a>})} Optional list of strategies for the layer.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.protocol" >protocol</a></td><td class=SDescription>{<a href="../Protocol-js.html#OpenLayers.Protocol" class=LClass id=link5 onMouseOver="ShowTip(event, 'tt4', 'link5')" onMouseOut="HideTip('tt4')">OpenLayers.Protocol</a>} Optional protocol for the layer.</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.renderers" >renderers</a></td><td class=SDescription>{Array(String)} List of supported Renderer classes. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.renderer" >renderer</a></td><td class=SDescription>{<a href="../Renderer-js.html#OpenLayers.Renderer" class=LClass id=link6 onMouseOver="ShowTip(event, 'tt5', 'link6')" onMouseOut="HideTip('tt5')">OpenLayers.Renderer</a>}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.rendererOptions" >rendererOptions</a></td><td class=SDescription>{Object} Options for the renderer. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.geometryType" >geometryType</a></td><td class=SDescription>{String} geometryType allows you to limit the types of geometries this layer supports. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.drawn" >drawn</a></td><td class=SDescription>{Boolean} Whether the Vector Layer features have been drawn yet.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.ratio" >ratio</a></td><td class=SDescription>{Float} This specifies the ratio of the size of the visiblity of the Vector Layer features to the size of the map.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" >OpenLayers.<wbr>Layer.<wbr>Vector</a></td><td class=SDescription>Create a new vector layer</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.destroy" id=link7 onMouseOver="ShowTip(event, 'tt6', 'link7')" onMouseOut="HideTip('tt6')">destroy</a></td><td class=SDescription>Destroy this layer</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.clone" id=link8 onMouseOver="ShowTip(event, 'tt7', 'link8')" onMouseOut="HideTip('tt7')">clone</a></td><td class=SDescription>Create a clone of this layer.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.refresh" id=link9 onMouseOver="ShowTip(event, 'tt8', 'link9')" onMouseOut="HideTip('tt8')">refresh</a></td><td class=SDescription>Ask the layer to request features again and redraw them. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.assignRenderer" id=link10 onMouseOver="ShowTip(event, 'tt9', 'link10')" onMouseOut="HideTip('tt9')">assignRenderer</a></td><td class=SDescription>Iterates through the available renderer implementations and selects and assigns the first one whose &ldquo;supported()&rdquo; function returns true.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.displayError" id=link11 onMouseOver="ShowTip(event, 'tt10', 'link11')" onMouseOut="HideTip('tt10')">displayError</a></td><td class=SDescription>Let the user know their browser isn&rsquo;t supported.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.setMap" id=link12 onMouseOver="ShowTip(event, 'tt11', 'link12')" onMouseOut="HideTip('tt11')">setMap</a></td><td class=SDescription>The layer has been added to the map.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.afterAdd" id=link13 onMouseOver="ShowTip(event, 'tt12', 'link13')" onMouseOut="HideTip('tt12')">afterAdd</a></td><td class=SDescription>Called at the end of the map.addLayer sequence. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.removeMap" id=link14 onMouseOver="ShowTip(event, 'tt13', 'link14')" onMouseOut="HideTip('tt13')">removeMap</a></td><td class=SDescription>The layer has been removed from the map.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.onMapResize" id=link15 onMouseOver="ShowTip(event, 'tt14', 'link15')" onMouseOut="HideTip('tt14')">onMapResize</a></td><td class=SDescription>Notify the renderer of the change in size.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.moveTo" id=link16 onMouseOver="ShowTip(event, 'tt15', 'link16')" onMouseOut="HideTip('tt15')">moveTo</a></td><td class=SDescription>Reset the vector layer&rsquo;s div so that it once again is lined up with the map. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.display" id=link17 onMouseOver="ShowTip(event, 'tt16', 'link17')" onMouseOut="HideTip('tt16')">display</a></td><td class=SDescription>Hide or show the Layer</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.addFeatures" id=link18 onMouseOver="ShowTip(event, 'tt17', 'link18')" onMouseOut="HideTip('tt17')">addFeatures</a></td><td class=SDescription>Add Features to the layer.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.removeFeatures" id=link19 onMouseOver="ShowTip(event, 'tt18', 'link19')" onMouseOut="HideTip('tt18')">removeFeatures</a></td><td class=SDescription>Remove features from the layer. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.removeAllFeatures" id=link20 onMouseOver="ShowTip(event, 'tt19', 'link20')" onMouseOut="HideTip('tt19')">removeAllFeatures</a></td><td class=SDescription>Remove all features from the layer.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.destroyFeatures" id=link21 onMouseOver="ShowTip(event, 'tt20', 'link21')" onMouseOut="HideTip('tt20')">destroyFeatures</a></td><td class=SDescription>Erase and destroy features on the layer.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.drawFeature" id=link22 onMouseOver="ShowTip(event, 'tt21', 'link22')" onMouseOut="HideTip('tt21')">drawFeature</a></td><td class=SDescription>Draw (or redraw) a feature on the layer. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.eraseFeatures" id=link23 onMouseOver="ShowTip(event, 'tt22', 'link23')" onMouseOut="HideTip('tt22')">eraseFeatures</a></td><td class=SDescription>Erase features from the layer.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureFromEvent" id=link24 onMouseOver="ShowTip(event, 'tt23', 'link24')" onMouseOut="HideTip('tt23')">getFeatureFromEvent</a></td><td class=SDescription>Given an event, return a feature if the event occurred over one. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureBy" id=link25 onMouseOver="ShowTip(event, 'tt24', 'link25')" onMouseOut="HideTip('tt24')">getFeatureBy</a></td><td class=SDescription>Given a property value, return the feature if it exists in the features array</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureById" id=link26 onMouseOver="ShowTip(event, 'tt25', 'link26')" onMouseOut="HideTip('tt25')">getFeatureById</a></td><td class=SDescription>Given a feature id, return the feature if it exists in the features array</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureByFid" id=link27 onMouseOver="ShowTip(event, 'tt26', 'link27')" onMouseOut="HideTip('tt26')">getFeatureByFid</a></td><td class=SDescription>Given a feature fid, return the feature if it exists in the features array</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeaturesByAttribute" id=link28 onMouseOver="ShowTip(event, 'tt27', 'link28')" onMouseOut="HideTip('tt27')">getFeaturesByAttribute</a></td><td class=SDescription>Returns an array of features that have the given attribute key set to the given value. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.onFeatureInsert" id=link29 onMouseOver="ShowTip(event, 'tt28', 'link29')" onMouseOut="HideTip('tt28')">onFeatureInsert</a></td><td class=SDescription>method called after a feature is inserted. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.preFeatureInsert" id=link30 onMouseOver="ShowTip(event, 'tt29', 'link30')" onMouseOut="HideTip('tt29')">preFeatureInsert</a></td><td class=SDescription>method called before a feature is inserted. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getDataExtent" id=link31 onMouseOver="ShowTip(event, 'tt30', 'link31')" onMouseOut="HideTip('tt30')">getDataExtent</a></td><td class=SDescription>Calculates the max extent which includes all of the features.</td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>

<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.Properties"></a>Properties</h3></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.events"></a>events</h3><div class=CBody><p>{<a href="../Events-js.html#OpenLayers.Events" class=LClass >OpenLayers.Events</a>}</p><h4 class=CHeading>Register a listener for a particular event with the following syntax</h4><blockquote><pre class="prettyprint">layer.events.register(type, obj, listener);</pre></blockquote><p>Listeners will be called with a reference to an event object.&nbsp;  The properties of this event depends on exactly what happened.</p><h4 class=CHeading>All event objects have at least the following properties</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>object</td><td class=CDLDescription>{Object} A reference to layer.events.object.</td></tr><tr><td class=CDLEntry>element</td><td class=CDLDescription>{DOMElement} A reference to layer.events.element.</td></tr></table><h4 class=CHeading>Supported map event types (in addition to those from <a href="../Layer-js.html#OpenLayers.Layer.events" class=LProperty id=link33 onMouseOver="ShowTip(event, 'tt32', 'link33')" onMouseOut="HideTip('tt32')">OpenLayers.Layer.events</a>)</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>beforefeatureadded</td><td class=CDLDescription>Triggered before a feature is added.&nbsp;  Listeners will receive an object with a <b>feature</b> property referencing the feature to be added.&nbsp;  To stop the feature from being added, a listener should return false.</td></tr><tr><td class=CDLEntry>beforefeaturesadded</td><td class=CDLDescription>Triggered before an array of features is added.&nbsp; Listeners will receive an object with a <b>features</b> property referencing the feature to be added.&nbsp; To stop the features from being added, a listener should return false.</td></tr><tr><td class=CDLEntry>featureadded</td><td class=CDLDescription>Triggered after a feature is added.&nbsp;  The event object passed to listeners will have a <b>feature</b> property with a reference to the added feature.</td></tr><tr><td class=CDLEntry>featuresadded</td><td class=CDLDescription>Triggered after features are added.&nbsp;  The event object passed to listeners will have a <b>features</b> property with a reference to an array of added features.</td></tr><tr><td class=CDLEntry>beforefeatureremoved</td><td class=CDLDescription>Triggered before a feature is removed.&nbsp; Listeners will receive an object with a <b>feature</b> property referencing the feature to be removed.</td></tr><tr><td class=CDLEntry>beforefeaturesremoved</td><td class=CDLDescription>Triggered before multiple features are removed.&nbsp; Listeners will receive an object with a <b>features</b> property referencing the features to be removed.</td></tr><tr><td class=CDLEntry>featureremoved</td><td class=CDLDescription>Triggerd after a feature is removed.&nbsp; The event object passed to listeners will have a <b>feature</b> property with a reference to the removed feature.</td></tr><tr><td class=CDLEntry>featuresremoved</td><td class=CDLDescription>Triggered after features are removed.&nbsp; The event object passed to listeners will have a <b>features</b> property with a reference to an array of removed features.</td></tr><tr><td class=CDLEntry>beforefeatureselected</td><td class=CDLDescription>Triggered before a feature is selected.&nbsp;  Listeners will receive an object with a <b>feature</b> property referencing the feature to be selected.&nbsp; To stop the feature from being selectd, a listener should return false.</td></tr><tr><td class=CDLEntry>featureselected</td><td class=CDLDescription>Triggered after a feature is selected.&nbsp;  Listeners will receive an object with a <b>feature</b> property referencing the selected feature.</td></tr><tr><td class=CDLEntry>featureunselected</td><td class=CDLDescription>Triggered after a feature is unselected.&nbsp; Listeners will receive an object with a <b>feature</b> property referencing the unselected feature.</td></tr><tr><td class=CDLEntry>beforefeaturemodified</td><td class=CDLDescription>Triggered when a feature is selected to be modified.&nbsp;  Listeners will receive an object with a <b>feature</b> property referencing the selected feature.</td></tr><tr><td class=CDLEntry>featuremodified</td><td class=CDLDescription>Triggered when a feature has been modified.&nbsp; Listeners will receive an object with a <b>feature</b> property referencing the modified feature.</td></tr><tr><td class=CDLEntry>afterfeaturemodified</td><td class=CDLDescription>Triggered when a feature is finished being modified.&nbsp; Listeners will receive an object with a <b>feature</b> property referencing the modified feature.</td></tr><tr><td class=CDLEntry>vertexmodified</td><td class=CDLDescription>Triggered when a vertex within any feature geometry has been modified.&nbsp;  Listeners will receive an object with a <b>feature</b> property referencing the modified feature, a <b>vertex</b> property referencing the vertex modified (always a point geometry), and a <b>pixel</b> property referencing the pixel location of the modification.</td></tr><tr><td class=CDLEntry>vertexremoved</td><td class=CDLDescription>Triggered when a vertex within any feature geometry has been deleted.&nbsp;  Listeners will receive an object with a <b>feature</b> property referencing the modified feature, a <b>vertex</b> property referencing the vertex modified (always a point geometry), and a <b>pixel</b> property referencing the pixel location of the removal.</td></tr><tr><td class=CDLEntry>sketchstarted</td><td class=CDLDescription>Triggered when a feature sketch bound for this layer is started.&nbsp;  Listeners will receive an object with a <b>feature</b> property referencing the new sketch feature and a <b>vertex</b> property referencing the creation point.</td></tr><tr><td class=CDLEntry>sketchmodified</td><td class=CDLDescription>Triggered when a feature sketch bound for this layer is modified.&nbsp;  Listeners will receive an object with a <b>vertex</b> property referencing the modified vertex and a <b>feature</b> property referencing the sketch feature.</td></tr><tr><td class=CDLEntry>sketchcomplete</td><td class=CDLDescription>Triggered when a feature sketch bound for this layer is complete.&nbsp;  Listeners will receive an object with a <b>feature</b> property referencing the sketch feature.&nbsp;  By returning false, a listener can stop the sketch feature from being added to the layer.</td></tr><tr><td class=CDLEntry>refresh</td><td class=CDLDescription>Triggered when something wants a strategy to ask the protocol for a new set of features.</td></tr></table></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.isBaseLayer"></a>isBaseLayer</h3><div class=CBody><p>{Boolean} The layer is a base layer.&nbsp;  Default is false.&nbsp;  Set this property in the layer options.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.isFixed"></a>isFixed</h3><div class=CBody><p>{Boolean} Whether the layer remains in one place while dragging the map.&nbsp; Note that setting this to true will move the layer to the bottom of the layer stack.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.features"></a>features</h3><div class=CBody><p>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link34 onMouseOver="ShowTip(event, 'tt1', 'link34')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.filter"></a>filter</h3><div class=CBody><p>{<a href="../Filter-js.html#OpenLayers.Filter" class=LClass id=link35 onMouseOver="ShowTip(event, 'tt2', 'link35')" onMouseOut="HideTip('tt2')">OpenLayers.Filter</a>} The filter set in this layer, a strategy launching read requests can combined this filter with its own filter.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.selectedFeatures"></a>selectedFeatures</h3><div class=CBody><p>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link36 onMouseOver="ShowTip(event, 'tt1', 'link36')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.unrenderedFeatures"></a>unrenderedFeatures</h3><div class=CBody><p>{Object} hash of features, keyed by feature.id, that the renderer failed to draw</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.reportError"></a>reportError</h3><div class=CBody><p>{Boolean} report friendly error message when loading of renderer fails.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.style"></a>style</h3><div class=CBody><p>{Object} Default style for the layer</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.styleMap"></a>styleMap</h3><div class=CBody><p>{<a href="../StyleMap-js.html#OpenLayers.StyleMap" class=LClass >OpenLayers.StyleMap</a>}</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.strategies"></a>strategies</h3><div class=CBody><p>{Array(<a href="../Strategy-js.html#OpenLayers.Strategy" class=LClass id=link37 onMouseOver="ShowTip(event, 'tt3', 'link37')" onMouseOut="HideTip('tt3')">OpenLayers.Strategy</a>})} Optional list of strategies for the layer.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.protocol"></a>protocol</h3><div class=CBody><p>{<a href="../Protocol-js.html#OpenLayers.Protocol" class=LClass id=link38 onMouseOver="ShowTip(event, 'tt4', 'link38')" onMouseOut="HideTip('tt4')">OpenLayers.Protocol</a>} Optional protocol for the layer.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.renderers"></a>renderers</h3><div class=CBody><p>{Array(String)} List of supported Renderer classes.&nbsp; Add to this list to add support for additional renderers.&nbsp; This list is ordered: the first renderer which returns true for the  &lsquo;supported()&rsquo; method will be used, if not defined in the &lsquo;renderer&rsquo; option.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.renderer"></a>renderer</h3><div class=CBody><p>{<a href="../Renderer-js.html#OpenLayers.Renderer" class=LClass id=link39 onMouseOver="ShowTip(event, 'tt5', 'link39')" onMouseOut="HideTip('tt5')">OpenLayers.Renderer</a>}</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.rendererOptions"></a>rendererOptions</h3><div class=CBody><p>{Object} Options for the renderer.&nbsp; See {<a href="../Renderer-js.html#OpenLayers.Renderer" class=LClass id=link40 onMouseOver="ShowTip(event, 'tt5', 'link40')" onMouseOut="HideTip('tt5')">OpenLayers.Renderer</a>} for supported options.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.geometryType"></a>geometryType</h3><div class=CBody><p>{String} geometryType allows you to limit the types of geometries this layer supports.&nbsp; This should be set to something like &ldquo;OpenLayers.Geometry.Point&rdquo; to limit types.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.drawn"></a>drawn</h3><div class=CBody><p>{Boolean} Whether the Vector Layer features have been drawn yet.</p></div></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.ratio"></a>ratio</h3><div class=CBody><p>{Float} This specifies the ratio of the size of the visiblity of the Vector Layer features to the size of the map.</p></div></div></div>

<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.Constructor"></a>Constructor</h3></div></div>

<div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.OpenLayers.Layer.Vector"></a>OpenLayers.<wbr>Layer.<wbr>Vector</h3><div class=CBody><p>Create a new vector layer</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>name</td><td class=CDLDescription>{String} A name for the layer</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional object with non-default properties to set on the layer.</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" class=LConstructor id=link41 onMouseOver="ShowTip(event, 'tt31', 'link41')" onMouseOut="HideTip('tt31')">OpenLayers.Layer.Vector</a>} A new vector layer</p></div></div></div>

<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.Functions"></a>Functions</h3></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.destroy"></a>destroy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function()</td></tr></table></blockquote><p>Destroy this layer</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.clone"></a>clone</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>clone: function (</td><td class="PParameter  prettyprint " nowrap>obj</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Create a clone of this layer.</p><p>Note: Features of the layer are also cloned.</p><h4 class=CHeading>Returns</h4><p>{<a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" class=LConstructor id=link42 onMouseOver="ShowTip(event, 'tt31', 'link42')" onMouseOut="HideTip('tt31')">OpenLayers.Layer.Vector</a>} An exact clone of this layer</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.refresh"></a>refresh</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>refresh: function(</td><td class="PParameter  prettyprint " nowrap>obj</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Ask the layer to request features again and redraw them.&nbsp;  Triggers the refresh event if the layer is in range and visible.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>obj</td><td class=CDLDescription>{Object} Optional object with properties for any listener of the refresh event.</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.assignRenderer"></a>assignRenderer</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">assignRenderer: function()</td></tr></table></blockquote><p>Iterates through the available renderer implementations and selects and assigns the first one whose &ldquo;supported()&rdquo; function returns true.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.displayError"></a>displayError</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">displayError: function()</td></tr></table></blockquote><p>Let the user know their browser isn&rsquo;t supported.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.setMap"></a>setMap</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>setMap: function(</td><td class="PParameter  prettyprint " nowrap>map</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>The layer has been added to the map.</p><p>If there is no renderer set, the layer can&rsquo;t be used.&nbsp; Remove it.&nbsp; Otherwise, give the renderer a reference to the map and set its size.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>map</td><td class=CDLDescription>{<a href="../Map-js.html#OpenLayers.Map" class=LClass id=link43 onMouseOver="ShowTip(event, 'tt33', 'link43')" onMouseOut="HideTip('tt33')">OpenLayers.Map</a>}</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.afterAdd"></a>afterAdd</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">afterAdd: function()</td></tr></table></blockquote><p>Called at the end of the map.addLayer sequence.&nbsp;  At this point, the map will have a base layer.&nbsp;  Any autoActivate strategies will be activated here.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.removeMap"></a>removeMap</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>removeMap: function(</td><td class="PParameter  prettyprint " nowrap>map</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>The layer has been removed from the map.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>map</td><td class=CDLDescription>{<a href="../Map-js.html#OpenLayers.Map" class=LClass id=link44 onMouseOver="ShowTip(event, 'tt33', 'link44')" onMouseOut="HideTip('tt33')">OpenLayers.Map</a>}</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.onMapResize"></a>onMapResize</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">onMapResize: function()</td></tr></table></blockquote><p>Notify the renderer of the change in size.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.moveTo"></a>moveTo</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>moveTo: function(</td><td class="PParameter  prettyprint " nowrap>bounds,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>zoomChanged,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>dragging</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Reset the vector layer&rsquo;s div so that it once again is lined up with the map.&nbsp; Notify the renderer of the change of extent, and in the case of a change of zoom level (resolution), have the renderer redraw features.</p><p>If the layer has not yet been drawn, cycle through the layer&rsquo;s features and draw each one.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>bounds</td><td class=CDLDescription>{<a href="../BaseTypes/Bounds-js.html#OpenLayers.Bounds" class=LClass id=link45 onMouseOver="ShowTip(event, 'tt34', 'link45')" onMouseOut="HideTip('tt34')">OpenLayers.Bounds</a>}</td></tr><tr><td class=CDLEntry>zoomChanged</td><td class=CDLDescription>{Boolean}</td></tr><tr><td class=CDLEntry>dragging</td><td class=CDLDescription>{Boolean}</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.display"></a>display</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>display: function(</td><td class="PParameter  prettyprint " nowrap>display</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Hide or show the Layer</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>display</td><td class=CDLDescription>{Boolean}</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.addFeatures"></a>addFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>addFeatures: function(</td><td class="PParameter  prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>options</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Add Features to the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link46 onMouseOver="ShowTip(event, 'tt1', 'link46')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object}</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.removeFeatures"></a>removeFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>removeFeatures: function(</td><td class="PParameter  prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>options</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Remove features from the layer.&nbsp;  This erases any drawn features and removes them from the layer&rsquo;s control.&nbsp;  The beforefeatureremoved and featureremoved events will be triggered for each feature.&nbsp;  The featuresremoved event will be triggered after all features have been removed.&nbsp;  To supress event triggering, use the silent option.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link47 onMouseOver="ShowTip(event, 'tt1', 'link47')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)} List of features to be removed.</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional properties for changing behavior of the removal.</td></tr></table><h4 class=CHeading>Valid options</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>silent</td><td class=CDLDescription>{Boolean} Supress event triggering.&nbsp;  Default is false.</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.removeAllFeatures"></a>removeAllFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>removeAllFeatures: function(</td><td class="PParameter  prettyprint " nowrap>options</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Remove all features from the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional properties for changing behavior of the removal.</td></tr></table><h4 class=CHeading>Valid options</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>silent</td><td class=CDLDescription>{Boolean} Supress event triggering.&nbsp;  Default is false.</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.destroyFeatures"></a>destroyFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>destroyFeatures: function(</td><td class="PParameter  prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>options</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Erase and destroy features on the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link48 onMouseOver="ShowTip(event, 'tt1', 'link48')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)} An optional array of features to destroy.&nbsp;  If not supplied, all features on the layer will be destroyed.</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object}</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.drawFeature"></a>drawFeature</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>drawFeature: function(</td><td class="PParameter  prettyprint " nowrap>feature,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>style</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Draw (or redraw) a feature on the layer.&nbsp;  If the optional style argument is included, this style will be used.&nbsp;  If no style is included, the feature&rsquo;s style will be used.&nbsp;  If the feature doesn&rsquo;t have a style, the layer&rsquo;s style will be used.</p><p>This function is not designed to be used when adding features to the layer (use addFeatures instead).&nbsp; It is meant to be used when the style of a feature has changed, or in some other way needs to visually updated <b>after</b> it has already been added to a layer.&nbsp; You must add the feature to the layer for most layer-related events to happen.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link49 onMouseOver="ShowTip(event, 'tt1', 'link49')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}</td></tr><tr><td class=CDLEntry>style</td><td class=CDLDescription>{String | Object} Named render intent or full symbolizer object.</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.eraseFeatures"></a>eraseFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>eraseFeatures: function(</td><td class="PParameter  prettyprint " nowrap>features</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Erase features from the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link50 onMouseOver="ShowTip(event, 'tt1', 'link50')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureFromEvent"></a>getFeatureFromEvent</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeatureFromEvent: function(</td><td class="PParameter  prettyprint " nowrap>evt</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given an event, return a feature if the event occurred over one.&nbsp; Otherwise, return null.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Event}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link51 onMouseOver="ShowTip(event, 'tt1', 'link51')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature if one was under the event.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureBy"></a>getFeatureBy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeatureBy: function(</td><td class="PParameter  prettyprint " nowrap>property,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>value</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a property value, return the feature if it exists in the features array</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>property</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>value</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link52 onMouseOver="ShowTip(event, 'tt1', 'link52')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature corresponding to the given property value or null if there is no such feature.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureById"></a>getFeatureById</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeatureById: function(</td><td class="PParameter  prettyprint " nowrap>featureId</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a feature id, return the feature if it exists in the features array</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>featureId</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link53 onMouseOver="ShowTip(event, 'tt1', 'link53')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature corresponding to the given featureId or null if there is no such feature.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureByFid"></a>getFeatureByFid</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeatureByFid: function(</td><td class="PParameter  prettyprint " nowrap>featureFid</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a feature fid, return the feature if it exists in the features array</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>featureFid</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link54 onMouseOver="ShowTip(event, 'tt1', 'link54')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature corresponding to the given featureFid or null if there is no such feature.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeaturesByAttribute"></a>getFeaturesByAttribute</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeaturesByAttribute: function(</td><td class="PParameter  prettyprint " nowrap>attrName,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>attrValue</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns an array of features that have the given attribute key set to the given value.&nbsp; Comparison of attribute values takes care of datatypes, e.g. the string &lsquo;1234&rsquo; is not equal to the number 1234.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>attrName</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>attrValue</td><td class=CDLDescription>{Mixed}</td></tr></table><h4 class=CHeading>Returns</h4><p>Array({<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link55 onMouseOver="ShowTip(event, 'tt1', 'link55')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}) An array of features that have the passed named attribute set to the given value.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.onFeatureInsert"></a>onFeatureInsert</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>onFeatureInsert: function(</td><td class="PParameter  prettyprint " nowrap>feature</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>method called after a feature is inserted.&nbsp; Does nothing by default.&nbsp; Override this if you need to do something on feature updates.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link56 onMouseOver="ShowTip(event, 'tt1', 'link56')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.preFeatureInsert"></a>preFeatureInsert</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>preFeatureInsert: function(</td><td class="PParameter  prettyprint " nowrap>feature</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>method called before a feature is inserted.&nbsp; Does nothing by default.&nbsp; Override this if you need to do something when features are first added to the layer, but before they are drawn, such as adjust the style.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link57 onMouseOver="ShowTip(event, 'tt1', 'link57')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getDataExtent"></a>getDataExtent</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getDataExtent: function ()</td></tr></table></blockquote><p>Calculates the max extent which includes all of the features.</p><h4 class=CHeading>Returns</h4><p>{<a href="../BaseTypes/Bounds-js.html#OpenLayers.Bounds" class=LClass id=link58 onMouseOver="ShowTip(event, 'tt34', 'link58')" onMouseOut="HideTip('tt34')">OpenLayers.Bounds</a>} or null if the layer has no features with geometries.</p></div></div></div>

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<!--START_ND_TOOLTIPS-->
<div class=CToolTip id="tt1"><div class=CClass>Vector features use the OpenLayers.Geometry classes as geometry description. </div></div><div class=CToolTip id="tt2"><div class=CClass>This class represents an OGC Filter.</div></div><div class=CToolTip id="tt3"><div class=CClass>Abstract vector layer strategy class. </div></div><div class=CToolTip id="tt4"><div class=CClass>Abstract vector layer protocol class. </div></div><div class=CToolTip id="tt5"><div class=CClass>This is the base class for all renderers.</div></div><div class=CToolTip id="tt6"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function()</td></tr></table></blockquote>Destroy this layer</div></div><div class=CToolTip id="tt7"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>clone: function (</td><td class="PParameter  prettyprint " nowrap>obj</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Create a clone of this layer.</div></div><div class=CToolTip id="tt8"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>refresh: function(</td><td class="PParameter  prettyprint " nowrap>obj</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Ask the layer to request features again and redraw them. </div></div><div class=CToolTip id="tt9"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">assignRenderer: function()</td></tr></table></blockquote>Iterates through the available renderer implementations and selects and assigns the first one whose &ldquo;supported()&rdquo; function returns true.</div></div><div class=CToolTip id="tt10"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">displayError: function()</td></tr></table></blockquote>Let the user know their browser isn&rsquo;t supported.</div></div><div class=CToolTip id="tt11"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>setMap: function(</td><td class="PParameter  prettyprint " nowrap>map</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>The layer has been added to the map.</div></div><div class=CToolTip id="tt12"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">afterAdd: function()</td></tr></table></blockquote>Called at the end of the map.addLayer sequence. </div></div><div class=CToolTip id="tt13"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>removeMap: function(</td><td class="PParameter  prettyprint " nowrap>map</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>The layer has been removed from the map.</div></div><div class=CToolTip id="tt14"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">onMapResize: function()</td></tr></table></blockquote>Notify the renderer of the change in size.</div></div><div class=CToolTip id="tt15"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>moveTo: function(</td><td class="PParameter  prettyprint " nowrap>bounds,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>zoomChanged,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>dragging</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Reset the vector layer&rsquo;s div so that it once again is lined up with the map. </div></div><div class=CToolTip id="tt16"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>display: function(</td><td class="PParameter  prettyprint " nowrap>display</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Hide or show the Layer</div></div><div class=CToolTip id="tt17"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>addFeatures: function(</td><td class="PParameter  prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>options</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Add Features to the layer.</div></div><div class=CToolTip id="tt18"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>removeFeatures: function(</td><td class="PParameter  prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>options</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Remove features from the layer. </div></div><div class=CToolTip id="tt19"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>removeAllFeatures: function(</td><td class="PParameter  prettyprint " nowrap>options</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Remove all features from the layer.</div></div><div class=CToolTip id="tt20"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>destroyFeatures: function(</td><td class="PParameter  prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>options</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Erase and destroy features on the layer.</div></div><div class=CToolTip id="tt21"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>drawFeature: function(</td><td class="PParameter  prettyprint " nowrap>feature,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>style</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Draw (or redraw) a feature on the layer. </div></div><div class=CToolTip id="tt22"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>eraseFeatures: function(</td><td class="PParameter  prettyprint " nowrap>features</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Erase features from the layer.</div></div><div class=CToolTip id="tt23"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeatureFromEvent: function(</td><td class="PParameter  prettyprint " nowrap>evt</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given an event, return a feature if the event occurred over one. </div></div><div class=CToolTip id="tt24"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeatureBy: function(</td><td class="PParameter  prettyprint " nowrap>property,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>value</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a property value, return the feature if it exists in the features array</div></div><div class=CToolTip id="tt25"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeatureById: function(</td><td class="PParameter  prettyprint " nowrap>featureId</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a feature id, return the feature if it exists in the features array</div></div><div class=CToolTip id="tt26"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeatureByFid: function(</td><td class="PParameter  prettyprint " nowrap>featureFid</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a feature fid, return the feature if it exists in the features array</div></div><div class=CToolTip id="tt27"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getFeaturesByAttribute: function(</td><td class="PParameter  prettyprint " nowrap>attrName,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>attrValue</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns an array of features that have the given attribute key set to the given value. </div></div><div class=CToolTip id="tt28"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>onFeatureInsert: function(</td><td class="PParameter  prettyprint " nowrap>feature</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>method called after a feature is inserted. </div></div><div class=CToolTip id="tt29"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>preFeatureInsert: function(</td><td class="PParameter  prettyprint " nowrap>feature</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>method called before a feature is inserted. </div></div><div class=CToolTip id="tt30"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getDataExtent: function ()</td></tr></table></blockquote>Calculates the max extent which includes all of the features.</div></div><div class=CToolTip id="tt31"><div class=CConstructor>Create a new vector layer</div></div><div class=CToolTip id="tt32"><div class=CProperty>{OpenLayers.Events}</div></div><div class=CToolTip id="tt33"><div class=CClass>Instances of OpenLayers.Map are interactive maps embedded in a web page. </div></div><div class=CToolTip id="tt34"><div class=CClass>Instances of this class represent bounding boxes. </div></div><!--END_ND_TOOLTIPS-->




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